Saina Nehwal, Tanvi Lad, Kidambi Srikanth and Sameer Verma entered the second round of Australian Open Super Series Badminton tournament in Sydney today. However, it was curtains for P.V.Sindhu and RMV Gurusaidutt. Star Indian shuttler Saina outplayed Joy Lai of Australia with a dominating 21-10, 21-14 win in women's singles in just 29 minutes. Seventh seeded Saina will clash with Malaysia's Jin Wei Goh in the second round. Youngster Tanvi registered a come-from-behind win 18-21 21-14 21-11 over qualifier Tiffany Ho of Australia in 52 minutes to enter round two of the tournament. She will next take on fourth-seeded Wang Yihan.In men's singles, India's Kidambi Srikanth, ranked 12th, posted an easy 21-16, 21-12 win over World No.11 NG Ka Long Angus of Hong Kong. Sameer Verma prevailed over Indonesia's Ihsan Maulana Mustofa 22-20, 15-21 , 21-15. Srikanth will next face Indonesia's Sony Dwi Kuncoro, while Sameer will take on the winner of match between Anthony Sinisuka Ginting and Chou Tien-chen. But P.V. Sindhu and RMV Gurusaidutt failed to clear the first round hurdle. World No. 10 Sindhu was stunned by South Korea's Kim Hyo Min, ranked 40th in the world, 15-21 19-21 after a 55-minute battle. Gurusaidutt who qualified to the main draw after winning both his qualifying matches yesterday went down 19-21, 21-12, 15-21 to world no. 14 Hu Yun of Hong Kong in the first round.